curl --request POST \
  --url https://api.privy.io/v1/users/{user_id}/fiat/accounts \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --header 'privy-app-id: <privy-app-id>' \
  --data '
{
  "provider": "bridge-sandbox",
  "account_owner_name": "John Doe",
  "currency": "usd",
  "bank_name": "Chase",
  "account": {
    "account_number": "1234567899",
    "routing_number": "121212121",
    "checking_or_savings": "checking"
  },
  "address": {
    "street_line_1": "123 Washington St",
    "street_line_2": "Apt 2F",
    "city": "New York",
    "state": "NY",
    "postal_code": "10001",
    "country": "USA"
  },
  "first_name": "John",
  "last_name": "Doe"
}
'

HttpResponse<String> response = Unirest.post("https://api.privy.io/v1/users/{user_id}/fiat/accounts")
  .header("privy-app-id", "<privy-app-id>")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"provider\": \"bridge-sandbox\",\n  \"account_owner_name\": \"John Doe\",\n  \"currency\": \"usd\",\n  \"bank_name\": \"Chase\",\n  \"account\": {\n    \"account_number\": \"1234567899\",\n    \"routing_number\": \"121212121\",\n    \"checking_or_savings\": \"checking\"\n  },\n  \"address\": {\n    \"street_line_1\": \"123 Washington St\",\n    \"street_line_2\": \"Apt 2F\",\n    \"city\": \"New York\",\n    \"state\": \"NY\",\n    \"postal_code\": \"10001\",\n    \"country\": \"USA\"\n  },\n  \"first_name\": \"John\",\n  \"last_name\": \"Doe\"\n}")
  .asString();

const options = {
  method: 'POST',
  headers: {
    'privy-app-id': '<privy-app-id>',
    Authorization: 'Basic <encoded-value>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    provider: 'bridge-sandbox',
    account_owner_name: 'John Doe',
    currency: 'usd',
    bank_name: 'Chase',
    account: {
      account_number: '1234567899',
      routing_number: '121212121',
      checking_or_savings: 'checking'
    },
    address: {
      street_line_1: '123 Washington St',
      street_line_2: 'Apt 2F',
      city: 'New York',
      state: 'NY',
      postal_code: '10001',
      country: 'USA'
    },
    first_name: 'John',
    last_name: 'Doe'
  })
};

fetch('https://api.privy.io/v1/users/{user_id}/fiat/accounts', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.privy.io/v1/users/{user_id}/fiat/accounts",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'provider' => 'bridge-sandbox',
    'account_owner_name' => 'John Doe',
    'currency' => 'usd',
    'bank_name' => 'Chase',
    'account' => [
        'account_number' => '1234567899',
        'routing_number' => '121212121',
        'checking_or_savings' => 'checking'
    ],
    'address' => [
        'street_line_1' => '123 Washington St',
        'street_line_2' => 'Apt 2F',
        'city' => 'New York',
        'state' => 'NY',
        'postal_code' => '10001',
        'country' => 'USA'
    ],
    'first_name' => 'John',
    'last_name' => 'Doe'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "Content-Type: application/json",
    "privy-app-id: <privy-app-id>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.privy.io/v1/users/{user_id}/fiat/accounts"

	payload := strings.NewReader("{\n  \"provider\": \"bridge-sandbox\",\n  \"account_owner_name\": \"John Doe\",\n  \"currency\": \"usd\",\n  \"bank_name\": \"Chase\",\n  \"account\": {\n    \"account_number\": \"1234567899\",\n    \"routing_number\": \"121212121\",\n    \"checking_or_savings\": \"checking\"\n  },\n  \"address\": {\n    \"street_line_1\": \"123 Washington St\",\n    \"street_line_2\": \"Apt 2F\",\n    \"city\": \"New York\",\n    \"state\": \"NY\",\n    \"postal_code\": \"10001\",\n    \"country\": \"USA\"\n  },\n  \"first_name\": \"John\",\n  \"last_name\": \"Doe\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("privy-app-id", "<privy-app-id>")
	req.Header.Add("Authorization", "Basic <encoded-value>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "id": "a068d2dd-743a-4011-9b62-8ad33cc7a7be",
  "bank_name": "Chase",
  "currency": "usd",
  "account_type": "us",
  "last_4": "7899"
}